Why Calling China Is a Different Problem

China is the second-largest source of international students in the UK, with well over 120,000 studying here, and for most of them, staying connected home involves more than just finding a cheap rate per minute.

Two things make it different from calling most other countries. First, China's internet restrictions mean that even with data roaming switched on, services like Google, WhatsApp and Instagram are blocked inside China without a VPN, so a UK SIM with roaming data doesn't automatically solve communication the way it would for, say, roaming in the EU. Second, and less obvious, a mainland Chinese phone number can be deactivated after a period of inactivity if it isn't topped up, and losing it is a genuine problem: Chinese banking apps, Alipay and WeChat Pay's real-name verification, and everyday family contact are all commonly tied to that original number. Once it's gone, getting it back from abroad isn't straightforward.

That second problem is specific enough that it shapes which UK network is actually worth choosing, more than price alone does.

CMLink: The Network Actually Built for This

CMLink UK is operated by China Mobile, the world's largest mobile network operator, and runs on EE's network in the UK. It's built specifically for the Chinese student and expat community, down to 24/7 customer service in Mandarin and English, and includes a feature most general UK networks simply don't offer: 1-Card-Multi-Number, which lets you host or apply for a China number alongside your UK one, so you can keep receiving Chinese calls, texts and verification codes without your original number lapsing.

Plans include free or bundled calls to China, roaming data usable in China as well as the EU, and no long-term contract. Exact pricing shifts with promotions, PAYG bundles have run from around £11 a month for 20GB of UK data with 500 UK minutes and 1,000 international minutes, though it's worth checking CMLink's current plan list directly since offers change regularly.

Lyca Mobile: A Dedicated China Bundle Inside a Mainstream UK Plan

Lyca Mobile, also on the EE network, runs a China 100GB Plan at £20 for 30 days: 100GB of UK data, unlimited UK calls and texts, 1,314 minutes to China, 100 minutes to the EU and Hong Kong, and 2GB of roaming data usable in China. We've covered this in more detail in our piece on how Lyca Mobile serves Indian and Chinese students. It's a strong option if you want one plan that covers everyday UK data heavily alongside China calling, rather than treating China connectivity as the whole point of the SIM the way CMLink does. You can check Lyca's current China 100GB Plan and pricing here.

What About the Big Four and Everyone Else?

Worth being straightforward about this: EE, O2, Vodafone and Three don't offer anything China-specific, and neither do most of the well-known MVNOs. Lebara, which we've written about as a leader for calling India, sells general international minute add-ons that can be used for China, but it doesn't have a dedicated China bundle or roaming deal the way it does for India. If general add-ons cover what you need, you can check Lebara's current plans and international add-ons here. giffgaff, VOXI and SMARTY are built around UK and EU usage and don't feature China at all. If China connectivity is a priority rather than an afterthought, the field narrows quickly to CMLink and Lyca.

The VPN Reality Nobody's SIM Plan Solves

Whichever network you choose, it's worth setting expectations correctly before flying home: China's Great Firewall blocks Google, WhatsApp, Instagram and most Western apps and services at the network level, regardless of which UK provider's roaming data you're using. A VPN, set up before you travel rather than after you land, is still necessary for accessing those services from within China. Roaming data gets you online; it doesn't get you around the Firewall.

Which Should Students Choose?

If keeping your original Chinese number alive for banking apps, WeChat and family contact matters most, CMLink is the more purpose-built choice; it's the only network here actually designed around that specific problem. If you'd rather have one UK SIM with generous everyday data plus solid China minutes and roaming folded in, Lyca's China 100GB Plan does that well. For everything else, mainstream UK networks are fine, but don't expect them to have thought about China specifically at all.

Whichever you pick, it's worth running a free coverage check for your university address in the UK first, since both CMLink and Lyca run on the EE network and coverage still varies by postcode.

Whether you are a current CMLink or Lyca Mobile customer or planning to be one, we would love to hear about your experiences below.